Aging disrupts circadian gene regulation and function in macrophages

2021 ◽  
Author(s):  
Eran Blacher ◽  
Connie Tsai ◽  
Lev Litichevskiy ◽  
Zohar Shipony ◽  
Chinyere Agbaegbu Iweka ◽  
...  
Immunity ◽  
2006 ◽  
Vol 24 (1) ◽  
pp. 119
Author(s):  
Chen Dong ◽  
Shomyseh Sanjabi ◽  
Elizabeth Eynon
Keyword(s):  

Author(s):  
Steven E. Hyman ◽  
Doug McConnell

‘Mental illness: the collision of meaning with mechanism’ is based on the views of psychiatry that Steven Hyman articulated in his Loebel Lectures—mental illness results from the disordered functioning of the human brain and effective treatment repairs or mitigates those malfunctions. This view is not intended as reductionist as causes of mental illness and contributions to their repair may come from any source that affects the structure and function of the brain. These might include social interactions and other sources of lived experience, ideas (such as those learned in cognitive therapy), gene sequences and gene regulation, metabolic factors, drugs, electrodes, and so on. This, however, is not the whole story for psychiatry on Hyman’s view; interpersonal interactions between clinicians and patients, intuitively understood in such folk psychological terms as selfhood, intention, and agency are also critical for successful practice. As human beings who are suffering, patients seek to make sense of their lives and benefit from the empathy, respect, and a sense of being understood not only as the objects of a clinical encounter, but also as subjects. Hyman’s argument, however, is that the mechanisms by which human brains function and malfunction to produce the symptoms and impairments of mental illness are opaque to introspection and that the mechanistic understandings necessary for diagnosis and treatment are incommensurate with intuitive (folk psychological) human self-understanding. Thus, psychiatry does best when skillful clinicians switch between an objectifying medical and neurobiological stance and the interpersonal stance in which the clinician engages the patients as a subject. Attempts to integrate these incommensurate views of patients and their predicaments have historically produced incoherent explanations of psychopathology and have often led treatment astray. For example, privileging of folk psychological testimony, even when filtered through sophisticated theories has historically led psychiatry into intellectually blind and clinically ineffective cul-de-sacs such as psychoanalysis.


Science ◽  
2018 ◽  
Vol 361 (6403) ◽  
pp. 701-704 ◽  
Author(s):  
Jaechul Lim ◽  
Dongwan Kim ◽  
Young-suk Lee ◽  
Minju Ha ◽  
Mihye Lee ◽  
...  

RNA tails play integral roles in the regulation of messenger RNA (mRNA) translation and decay. Guanylation of the poly(A) tail was discovered recently, yet the enzymology and function remain obscure. Here we identify TENT4A (PAPD7) and TENT4B (PAPD5) as the enzymes responsible for mRNA guanylation. Purified TENT4 proteins generate a mixed poly(A) tail with intermittent non-adenosine residues, the most common of which is guanosine. A single guanosine residue is sufficient to impede the deadenylase CCR4-NOT complex, which trims the tail and exposes guanosine at the 3′ end. Consistently, depletion of TENT4A and TENT4B leads to a decrease in mRNA half-life and abundance in cells. Thus, TENT4A and TENT4B produce a mixed tail that shields mRNA from rapid deadenylation. Our study unveils the role of mixed tailing and expands the complexity of posttranscriptional gene regulation.


2010 ◽  
pp. 241-263 ◽  
Author(s):  
Mark F. Stinski ◽  
Jeffery L. Meier

Nature ◽  
1995 ◽  
Vol 373 (6513) ◽  
pp. 451-451 ◽  
Author(s):  
Robert W. Warren ◽  
Lisa Nagy ◽  
Jane Selegue ◽  
Julie Gates ◽  
Sean Carroll

2010 ◽  
Vol 11 (1) ◽  
pp. 25-34 ◽  
Author(s):  
S Laechelt ◽  
E Turrini ◽  
A Ruehmkorf ◽  
W Siegmund ◽  
I Cascorbi ◽  
...  

2017 ◽  
Vol 63 (4) ◽  
Author(s):  
Kamila Pawlicka ◽  
Patrick McDevitt Perrigue ◽  
Jan Barciszewski

The full scope of regulatory RNA evolution and function in epigenetic processes is still not well understood. The development of planarian flatworms to be used as a simple model organism for research has shown great potential to address gaps in knowledge in this field of study. The genomes of planarians encode a wide array of regulatory RNAs that function in gene regulation. Here we review planarians as a suitable model organism for the identification and function of regulatory RNAs.


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